Type-bar construction for type-writers or the like



No. 752,077. PATENTED FEB. 1a, 1904-. B'. r. KUNATH.

TYPE BAR CONSTRUCTION FOR TYPE WRITERS OR THE LIKE.

APPLICATION FILED A23 4. 1968. H0 MODEL. 2 SHEBTS8HEJ 1.

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No. 752,077. PATENTS!) FEB. 16, 1904.

B'. P. KUNATH.

TYPE BAR CONSTRUCTION FOR TYPE WRITERS OR THE LIKE.

- APPLIOATIQN FILED APR. 4. 1903.

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r UNITED STATES Patented February 16, 1904.

PATENT EEIcE.

EDWARD F. KUNATH, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO UN- DERWOOD TYPEWRITER COMPANY, 'OF NEW YORK, N. Y., A CORPORA TION OF NEW JERSEY.

TYPE-BAR CONSTRUCTION FOR TYPE-WRITERS OR THE LIKE.

SPECIFICATION forming part of Letters Patent N 0. 752,077, dated February 16, 1904.

Application filed April 4, 1903- Serial No. 151,026. (No model.) v

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Be it known that I, EDWARD F. KUNATH, a citizen of the United States, and a resident of 'JerseyCity, county of Hudson, and State of New Jersey, have invented certain new and useful Improvements in Type-Bar Constructions for Type-Writers or the Like, of which the following is a specification.

My invention relates to a construction of type-bars and of the means for supporting, guiding, and protecting the same, and has for its object to facilitate the removal of one or more type-bars from a type-writing machine or the like without disturbing the other typebars, and, further, to so guide the type-bars that they will be braced against lateral motion, and, finally, to prevent the entrance of dirt or other foreign matter at the pivot of the typebars, so as to reduce friction to a minimum.

My invention will now be described in its application to a front-strike type-writing machine of the well-known Underwood type; but I desire it to be understood that the invention may be applied to other machines, and further, that the particular construction shown in the drawings is but a typical example of my invention.

Figure l is a sectional elevation of a portion of a type-writer provided with my improvements. Fig. 2 is a rear view of the typebar support with one of the type-bars in section. Fig. 3 is a bottom view of the type-bar support. Fig. 4. is a side elevation of one of the type-bars. Fig. 5 is a section on line 5 5 of Fig. 1, and Fig. 6 is an enlarged detail view of the central portion of Fig. 2 with an additional improvement.

A indicates the frame of the machine, carying the segment B, on which the type-bars 3 are pivotally supported, the type-bars nornally resting against the cushion D and being idapted to be thrown up against the platen E 3y means of elbow-levers F, fulcrumed at F indoperated by means of the he -levers G, fulcrumed at G.

My present invention has reference only to :ertain features of the segment B and of the ;ype-bars 0, together with the'means for holding the type-bars on the segment, while the "other parts of the machine may he of any approved construction.

Each type-bar is provided hetweenthe type C and the aperture G which serves to receive the pivot rod or wire H, with a toe C curved about the axis as a center. The type-bars are received in slots B of the segment B, and the shoulder portions or ledges B which are located between the adjacent slots B, are so curved as to lie flush with the curved toes ofthe type-bars, whether the type-bars be in the position of rest, as shown, or in their printing position. It will therefore be understood that the toes C together with the ledges B of the segment, which lie between said toes, form a practically continuous curved surface the shape of which'does not vary as the type-bars move to and from the printing position, owing to the fact that the curve'of the toes C and of,

the ledges B both have the axis ofthe typebar as a center. I thus avoid the formation of recesses or shoulders, in which dirt or other foreign matter might lodge, and I efficiently protect the type-bar pivots against the entrance of foreign matter from the front. At the same time the toes C and particularly the free ends thereof working in the slots B as each type-bar'is operated, will act as cleaners or scrapers to remove any foreign material which should get into the segment notwithstandingthe precautions I have taken to prevent such occurrence.

The rod or wire-H which pivotally supports the type-bars C, is preferably formed in two sections, as shown in Fig. 2, each of which is provided with a handle H to enable it to be pulled out or pushed in independently of the other section. Thus the type-bars may be released from their pivots whenever desired.

It is of advantage, though, that the type-bars should not drop out of their normal position when they are released from their pivot, and to accomplish this I have provided an additional support which keeps the type-bars in their normal position even when the pivot-rod is removed. This support consists of a wire J or its equivalent, which wire is secured to the segment and extends below the pivot H to engage a shoulder or notch C of each type-bar. Preferably this notch C forms part of an open slot G which is also adapted to receive the pin F of the elbow-leverF, which swings the typebar on its pivot. It will be understood by reference to Fig. 1 that even if the pivotH is removed the support J will prevent the typebars from dropping from their normal position, and the type-bars can then be removed only by a forward pull followed by a clownward movement of the rear end of the typebar, which movements are not liable to take place accidentally.

In order that the pivots H may be readily inserted, I prefer to construct them as illustrated in detail in Fig. 6, where the inner end H of each pivot is shown pointed. This pointed end will act as awedge and will read-- ily enter the pivot-opening C of the type-bar, even if this opening does not perfectly aline with the openings of the adjacent shoulder portions B of the segments.

In order to protect the rear portions of the type-bars and their connection with the elbowlevers F against dust and foreign matter that may drop from the printing-point, I provide at the rear of the segment a cover-plate K, (separate or integral,) which I prefer to provide with notches K on its under surface, as shown best in Fig. 3, the notches K alining with the slots B of the segment, so that the walls of the notches will form a continuation of the guide which is afforded to the toes U of the type-bars by the walls of the slots B. By this arrangement I secure a practically dustproof construction and a very steady motion of the type-bars, which are braced, particularly against lateral motion. This is due principally to the provision of the toe G which is constantly in engagement with guiding-surfaces of the segment. The provision of the wire or equivalent support J is of great convenience when it is desired to remove only one or two type-bars, since all the other type-bars need not be disturbed.

I claim as my invention- 1. In a type-writer or like machine, a support, type-bars pivotally mounted thereon, the said support being provided with slots in which the type-bars move and with ledges between the said slots, the outer surfaces of said ledges being curved with the pivot as a center, and the type-bars being provided with toes similarly curved and arranged to lie flush with the outer surfaces of the said ledges.

2. In a type-writer or like machine, typebars, a support on which said type-bars are pivotally mounted, said support being provided with slots in which the type-bars move and being also provided with an extension projecting from the side of the pivot opposite to that on which said slots are arranged, and the type-bars being provided with toes arranged to work in said slots and below said extension.

3. In a type-writer or like machine, typebars, a support to which said type-bars are pivoted, said support being provided with slots on one side of the pivot and with an extension on the other side of the pivot, said extension being notched in line with the said slots, and the type-bars having toes arranged to move in said slots and notches.

4:- In a type-writer or like machine, typebars, a support having vertical slots in which said type-bars are pivoted, a removable pivot for connecting the type-bars with said support and an auxiliary support arranged across the lower ends of said slots for holding the type-bars in their normal position even when the pivot is removed.

5. In a type-writer or like machine, a support, a type-bar pivoted to the support, said type-bar being provided with a laterally-open slot,,and an auxiliary support extending into said slot. for holding the type-bar when the pivot isremoved.

6. In a type-writer or-like machine, a support provided with slots and with ledges between them, the said ledges being provided with a guideway, a pivot arranged to lie in said guideway, and type-bars adapted to be received in the slots of the support and to swing on the said pivot, the end of the pivot being pointed so that it will readily enter the openings of the type-bars and bring them to their proper position, in combination with an auxiliary support adapted to retain the typebars when the pivot is removed.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

EDWARD F. KUNATH.

Witnesses:

JOHN LOTKA, EUGENE EBLE. 

